3/4x-9=21

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Solution for 3/4x-9=21 equation: 


x in (-oo:+oo)

(3/4)*x-9 = 21 // - 21

(3/4)*x-21-9 = 0

3/4*x-30 = 0 // + 30

3/4*x = 30 // : 3/4

x = 30/3/4

x = 40

x = 40

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